Home / 19,211.23-28,820.31-8,686.21

Finding the Fourth Proportional to 19,211.23, 28,820.31 and 8,686.21

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Solution

The fourth proportional to 19,211.23, 28,820.31 and 8,686.21 is: 13,030.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.23 : 28,820.31 = 8,686.21 : x
  2. Step 2: Convert to fraction form
    19,211.23/28,820.31 = 8,686.21/x
  3. Step 3: Cross multiply
    19,211.23x = 28,820.31 × 8,686.21
  4. Step 4: Simplify right side
    19,211.23x = 250,339,247.10
  5. Step 5: Solve for x
    x = 250,339,247.10/19,211.23
  6. Step 6: Final answer
    x = 13,030.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.